CN104967577A - SAS switch and server - Google Patents
SAS switch and server Download PDFInfo
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- CN104967577A CN104967577A CN201510358164.6A CN201510358164A CN104967577A CN 104967577 A CN104967577 A CN 104967577A CN 201510358164 A CN201510358164 A CN 201510358164A CN 104967577 A CN104967577 A CN 104967577A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
- H04L49/356—Switches specially adapted for specific applications for storage area networks
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Abstract
The invention provides an SAS switch and a server. The SAS switch comprises a backboard and SAS switch subcards. The SAS switch subcards are connected with the backboard and can carry out hot plugging by oneself and can be used for providing an SAS exchanging capability for a calculating resource node and a storage resource node which are arranged in a separated manner physically. The SAS switch can connect a calculating resource node with a storage resource node in separated arrangement physically, can adjust the number of the SAS switch subcards and meets different application requirements in a lowest cost.
Description
Technical field
The present invention relates to server technology field, particularly relate to a kind of SAS switch and server.
Background technology
Traditional local storage server is usually by central processing unit (Central Processing Unit, CPU), mechanical hard disk (Hard Disk Drive, HDD), solid state hard disc (Solid State Disk, etc. SSD) concentrate in single physics cabinet, usually different application is met to capacity, bandwidth and number of times (the Input/output Per Second carrying out read-write operation per second with different server design schemes, IOPS) differentiated demand, cannot flexible expansion change to meet different application demands.In addition, local storage resources easily occurs that utilance is not enough, and these storage resources more than needed cannot be shared with the use of other computational resources efficiently.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.
For this reason, one object of the present invention is to propose a kind of SAS switch, and the computational resource node and storage resources node that are physically separated setting can couple together by this SAS switch, and, SAS switch subcard quantity can be adjusted flexibly, meet different application demands with minimum cost.Thus the SAS switch that the present embodiment proposes can be provided infrastructures for the logical server building different configuration flexibly.
Another object of the present invention is to propose a kind of server, computational resource node is separated setting with storage resources node by this server physically, and realize interconnecting by SAS switch, the logical server of different configuration can be built flexibly, meet different application demands and improve resource utilization.
For achieving the above object, the SAS switch that first aspect present invention embodiment proposes, comprising: backboard and SAS switch subcard; Described SAS switch subcard is connected with described backboard, can hot plug separately, independently can provide SAS exchange capacity for computational resource node and storage resources node for being physically separated setting.
The SAS switch that first aspect present invention embodiment proposes, by adopting SAS switch subcard, the computational resource node and storage resources node that are physically separated setting can be coupled together, in addition, SAS switch subcard can hot plug and can independent work separately, therefore, the quantity of SAS switch subcard can adjust flexibly, can meet different application demands with minimum cost.Thus the SAS switch that the present embodiment proposes can be provided infrastructures for the logical server building different configuration flexibly.
For achieving the above object, the server that second aspect present invention embodiment proposes, comprising: above-mentioned SAS switch; And, computational resource node and storage resources node; Wherein, described SAS switch connects computational resource node and storage resources node respectively, and described computational resource node is separated setting physically with described storage resources node.
The server that second aspect present invention embodiment proposes, be connected with storage resources node by the computational resource node of SAS switch by physical separation, the logical server of different configuration can be built flexibly, meet different application demands, in addition, because computational resource node and storage resources node can be interconnected by SAS switch, different computational resource nodes can access identical storage resources node, therefore can improve resource utilization.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the structural representation of the SAS switch that one embodiment of the invention proposes;
Fig. 2 is the structural representation of the SAS switch that another embodiment of the present invention proposes;
Fig. 3 is the structural representation of the SAS switch that another embodiment of the present invention proposes;
Fig. 4 is the structural representation of SAS switch subcard in the embodiment of the present invention;
Fig. 5 is the structural representation of the SAS switch that another embodiment of the present invention proposes;
Fig. 6 is the structural representation of the SAS switch that another embodiment of the present invention proposes;
Fig. 7 is the structural representation of the server that another embodiment of the present invention proposes;
Fig. 8 is the structural representation of the server that another embodiment of the present invention proposes;
Fig. 9 is the structural representation of the server that another embodiment of the present invention proposes;
Figure 10 is the structural representation of the server that another embodiment of the present invention proposes;
Figure 11 is the structural representation of the server that another embodiment of the present invention proposes;
Figure 12 is the structural representation of the server that another embodiment of the present invention proposes;
Figure 13 is the structural representation of the server that another embodiment of the present invention proposes.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar module or has module that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
In order to improve flexibility, in server, computational resource node can be separated setting physically with storage resources node, now, the computational resource node be separated and storage resources node can by being connected in series SCSI (Serial Attached SCSI, SAS) switch (switch) communication connection, SCSI is small computer system interface (Small Computer SystemInterface).
Fig. 1 is the structural representation of the SAS switch that one embodiment of the invention proposes, and this SAS switch 10 comprises:
Backboard 11 and SAS switch subcard 12;
Described SAS switch subcard 12 is connected with described backboard 11, can hot plug separately, independently can provide SAS exchange capacity for computational resource node and storage resources node for being physically separated setting.
Wherein, in computer realm, backboard is a kind of circuit board of frequent use, and the veneer with difference in functionality can be inserted on backboard.
In the present embodiment, SAS switch subcard 12 can be inserted on backboard 11.
In order to support hot plug, backboard can specifically refer to hot plug backboard.
SAS switch subcard is the chip with SAS exchange capacity, owing to having SAS exchange capacity, exchanges data can be carried out to the computational resource node and storage resources node being physically separated setting, thus realize interconnecting between this computational resource node and storage resources node.
The quantity of SAS switch subcard can be one or more, multiplely refers at least two.The main control chip of each SAS switch subcard can specifically SAS expander (expander), SAS expander possesses SAS is connected (Serial Advanced Technology Attachment, SATA) agreement exchange capacity exchange chip with series connection enhancing technology.Such chip channel (lane) number general finite at present, the highest lane number is 68 at present, and because usual SAS interface is x4 pattern, namely each interface takies 4 lane, therefore the maximum support of single-chip 17 x4 interfaces.
Optionally, this SAS switch can also comprise:
Network subcard, is connected with described switch subcard, for when described SAS switch subcard and external switch have the network interface of different transmission rates, carries out transmission rate conversion.
When comprising network subcard in SAS switch, network subcard can be specially one.
To comprise a network subcard and three SAS switch subcards in a SAS switch, see Fig. 2, this SAS switch 20 comprises: hot plug backboard 21, three SAS switch subcards 22 (in Fig. 2 an example label one) and a network subcard 23, each SAS switch subcard is all connected with network subcard, and each SAS switch subcard and network subcard are connected on hot plug backboard.Connection between SAS switch subcard and network subcard can be called that network connects, and SAS switch and the connection between network subcard and hot plug backboard can be called that backplane signal connects.
In addition, as shown in Figure 2, power supply, the modules such as heat radiation, management, independent of SAS switch self, are the infrastructure shared, can support that the differentiation of SAS switch therein module configures flexibly.In addition, independent of SAS switch self, the density of SAS switch subcard can be improved.
Each SAS switch subcard can provide SAS exchange capacity, and can hot plug separately, and the quantity by increase and decrease SAS switch subcard carrys out flexible expansion memory interface quantity, meets various differentiated business demand.
See Fig. 3, be the SAS switch example realized in 1U height cabinet, it comprises 3 SAS switch subcards and 1 network subcard, and wherein, 3 SAS switch subcards use SAS switch subcard-1, SAS switch subcard-2, SAS switch subcard-3 to represent respectively.
See Fig. 4, be the schematic diagram of single SAS switch subcard, each SAS switch subcard comprises 17 x4miniSASHD interfaces, 1 debugging interface and 1 network interface.
SAS switch subcard exchange capacity is up to 17x4x12Gbps=816Gbps, and the therefore maximum support of this SAS switch 51 x4miniSASHD interfaces, maximum switching capacity reaches 2.4T.
In the present embodiment, by adopting SAS switch subcard, network subcard and backboard, the modularization of function in SAS switch can being realized, by increasing and decreasing the quantity of subcard, different business demand can be met.
In another embodiment, by arranging network subcard, the problem that interconnects of the network interface with different transmission rates can be solved.
The main control chip SAS expander of SAS switch subcard is 100,000,000 (100M) network interface at present, and data center's widespread deployment 10,000,000,000 switches (network interface is 10,000,000,000 network interfaces).In order to ensure compatibility, need the problem that interconnects of solution 100,000,000 network interface and 10,000,000,000 network interfaces.
In order to solve the problem that interconnects of 100,000,000 network interfaces and 10,000,000,000 network interfaces, a kind of scheme increases 100M in SAS switch subcard inside to turn gigabit (1000M) module, then turned in 10,000,000,000 modules by gigabit and be coupled to 10,000,000,000 switches.This scheme deficiency is:
(1) in gigabit networking environment, the 100M interface of SAS expander can with gigabit switch autosensing, it is nonsensical that its 100M turns 1000M module, causes cost to be wasted;
In (2) ten thousand million network environments, each switch subcard needs 1 1000M to turn 10,000,000,000 modules and 1 10,000,000,000 port, but the network communication bandwidth demand of switch subcard is very little, causes cost to be wasted.
In order to avoid above-mentioned deficiency, the present embodiment, when the interconnecting of solution 100,000,000 network interface and 10,000,000,000 network interfaces, adopts following scheme:
When the network interface of described SAS switch subcard is 100,000,000 network interfaces, and the network interface of described external switch is when being 10,000,000,000 network interface, described network subcard is gigabit networking subcard, one end of described gigabit networking subcard connects 100,000,000 network interfaces of each SAS switch subcard, the other end connects one end that outside gigabit turns 10,000,000,000 modules, and the other end that described gigabit turns 10,000,000,000 modules connects described 10,000,000,000 network interfaces.
Such as, see Fig. 5, during network configuration in 10000000000 network environments, the present embodiment adopts an independent pluggable gigabit networking subcard, it is first connected to the 100M port of each SAS switch subcard, then be connected to 1000M by 1000M port and turn 10,000,000,000 modules, on final, be coupled to 10,000,000,000 network ports of 10,000,000,000 switches.
In this present embodiment, no matter SAS switch inside possesses how many switch subcards, and it needs to turn 10,000,000,000 modules and 1 10,000,000,000 port by 1 1000M and can realize and the interconnecting of external environment condition, and greatly reduces network cost.
Described above is the problem that interconnects of 100,000,000 network interfaces and 10,000,000,000 network interfaces, but under other scene, network subcard can not be needed.Such as, current gigabit networking interface has the adaptive ability of 100,000,000 and gigabit, therefore, when not needing configuration network subcard under gigabit networking environment.
Concrete, when the network interface of described SAS switch subcard is 100,000,000 network interfaces, and when the network interface of described external switch is gigabit networking interface, 100,000,000 network interfaces of described SAS switch subcard connect described gigabit networking interface.
Such as, see Fig. 6, in gigabit networking environment, 100M network interface and the gigabit switch 1000M interface of SAS switch subcard are adaptive, and therefore the present embodiment is without the need to gigabit networking subcard.The present embodiment is modularized design, directly can remove gigabit networking subcard to save cost.
In the embodiment of the present invention, by adopting SAS switch subcard, the computational resource node and storage resources node that are physically separated setting can be coupled together, in addition, SAS switch subcard can hot plug and can independent work separately, therefore, the quantity of SAS switch subcard can adjust flexibly, can meet different application demands with minimum cost.Thus the SAS switch that the present embodiment proposes can be provided infrastructures for the logical server building different configuration flexibly.By adopting subcard mode, can modularization be realized, as required swap modules, meeting different business demand.By arranging or not arranging network subcard, can difference environmentally, not only can solve the compatibling problem of the network interface of different transmission rates, can also reduce costs.
Fig. 7 is the structural representation of the server that another embodiment of the present invention proposes, and this server comprises: SAS switch 71, computational resource node 72 and storage resources node 73.
Wherein, described SAS switch 71 connects computational resource node 72 and storage resources node 73 respectively, and described computational resource node 72 is separated setting physically with described storage resources node 73.
SAS switch 71 can be described above, do not repeat them here.
In an embodiment, this server can also comprise:
With described SAS switch independently arrange as at least one item in lower module:
Supply module, radiating module, administration module.
Such as, as shown in Figure 2, power supply, the modules such as heat radiation, management, independent of SAS switch self, are the infrastructure shared, can support that the differentiation of SAS switch therein module configures flexibly.
In another embodiment, described SAS switch also for:
Set up computational resource node and with the mapping relations between the single disk storage resources node that is granularity.
Concrete, can by subregion (zoning) technology with single disk for granularity sets up the mapping relations of storage resources and computational resource, the logical server that therefore can build arbitrary disposition in theory to meet various different storage application demand, as hot storage, warm storage and cold storage.
In addition, can configuration module be called for the module setting up these mapping relations, a configuration module can be set on each SAS switch subcard, or, at SAS switch internal unity, a configuration module is set.
Such as, see Fig. 8, computational resource node is two, represent with node A and Node B respectively, wherein, can comprise in each computational resource node: the modules such as central processing unit (Central Process Unit, CPU) and host bus adaptor (HostBus Adapter, HBA).
Storage resources node is three, each storage resources node is disk cluster (Just a Bunch of Disks, JBOD), according to the difference of agreement and storage mode, JBOD can be divided into multiple, in the present embodiment, use SATA HDD JBOD respectively, SATA SSD JBOD and SAS HDD JBOD represents.One or more disk can be comprised in each JBOD.
Be the mapping relations that granularity carries out computational resource and storage resources with disk in the present embodiment.Such as, see Fig. 8, the storage resources that node A is corresponding comprises three disks (disk in SATA HDD JBOD and two disks in SATA SSD JBOD), and storage resources corresponding to Node B comprises four disks (disk in SATA SSD JBOD and three disks in SAS HDDJBOD).
In the present embodiment, by SAS switch, the computational resource of physics decoupling zero and storage resources are converged, the server of different configuration can be built flexibly.
In another embodiment, when described computational resource node and described storage resources node are respectively multiple, the annexation of described computational resource node and described storage resources node and described SAS switch meets at least one item in following condition:
Each computational resource node is connected to described SAS switch by one or more port;
Each storage resources node is connected to described SAS switch by one or more port;
Different storage resources node cascades, and a storage resources node at least two storage resources nodes after cascade is connected to described SAS switch by one or more port.
Such as, see Fig. 9, each computational resource node and each storage resources node (representing with JBOD) are connected on SAS switch by a SAS port.Because SAS switch single port is x4miniSASHD interface, bandwidth is 48Gbps, calculates by single disk 200MB, and a port can support 24 disks.Therefore for major applications, computational resource node and JBOD are all port interconnected to SAS switch by 1, can meet bandwidth, capacity, primary demand of carrying out the number of times (Input/output Per Second, IOPS) of read-write operation per second.
Again such as, see Figure 10, each computational resource node is connected on SAS switch by a SAS port, there is cascade connection between different storage resources nodes (representing with JBOD), and a JBOD in multiple JBOD of cascade is connected to SAS switch by 1 SAS port.SAS switch ports themselves demand can be reduced like this.Can be applied to for emphasizing memory capacity but to bandwidth and the not high scene of IOPS demand.
Again such as, see Figure 11, each computational resource node is connected on SAS switch by a SAS port, and each storage resources node (representing with JBOD) is connected on SAS switch by multiple SAS port.When multiple threads of multiple computational resource node or same computational resource node access same JBOD simultaneously, now increase the interconnect port number of JBOD and SAS switch by lifting storage IOPS.
In the present embodiment, topology can be built flexibly according to memory bandwidth, capacity, IOPS etc.
In another embodiment, when the quantity of described SAS switch subcard is at least two,
The resource node that each SAS switch subcard connects forms independently resource pool; Or,
Each SAS switch subcard connects the resource node of self correspondence, and is connected to each other between two between different SAS switch subcards, and the resource node making different SAS switch subcards corresponding forms unified resource pond;
Wherein, described resource node comprises: computational resource node and storage resources node.
Such as, see Figure 12, each SAS switch subcard correspondence one independently resource pool.
For the configuration of 1 rack, if when the port number of 1 SAS switch subcard cannot meet the demand for interconnection of storage resources node and computational resource node, computational resource and storage resources that SAS switch subcard quantity carrys out linear expansion rack can be increased.The calculating now connected under each switch subcard and storage resources build separate resource pool, and computational resource node can access the storage resources node in this resource pool, and can not access the storage resources node in other resource pools.
In the present embodiment, by increase and decrease SAS switch subcard quantity, can linear expansion computational resource and storage resources.
Again such as, see Figure 13, different SAS switch subcard forms unified resource pool.
Such as, by interconnected between two for multiple SAS switch subcard, now any one computational resource node can access any one the storage resources node under this SAS switch in this resource pool, therefore multiple independently resource pool can be converged as unified logical resource pond.The interconnect port quantity increased between SAS switch subcard will promote the IO performance of the memory node of computing node access switch-spanning subcard, but the storage port quantity will SAS switch be reduced externally providing simultaneously, thus affect calculating that Single Cabinet can support, storage resources number of nodes.Reduce the data access demand of switch-spanning subcard by software merit rating, now SAS switch subcard only needs 1 interconnect port can meet the demand of uniform logical resource pool between any two.
In the present embodiment, by the connection between two between different SAS switch subcard, unified resource pond can be formed, meet the data access demand of switch-spanning subcard.
In the embodiment of the present invention, be connected with storage resources node by the computational resource node of SAS switch by physical separation, the logical server of different configuration can be built flexibly, meet different application demands, in addition, because computational resource node and storage resources node can be interconnected by SAS switch, different computational resource nodes can access identical storage resources node, therefore can promote resource utilization.The interconnected bandwidth of the embodiment of the present invention is higher, and access time delay is less.SAS switch is modularized design, and respective switch subcard independently can provide service, and hot-swappable, therefore can according to business demand flexible expansion port number.The miniSASHD interface of the maximum support of SAS switch 51 x4, exchange capacity is up to 2.4T.Topology can be built flexibly according to demands such as memory bandwidth, capacity, IOPS, reduce SAS switch ports themselves demand, reduce system lower deployment cost.
It should be noted that, in describing the invention, term " first ", " second " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " refers at least two.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the application-specific integrated circuit (ASIC) of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a SAS switch, is characterized in that, comprising:
Backboard and SAS switch subcard;
Described SAS switch subcard is connected with described backboard, can hot plug separately, independently can provide SAS exchange capacity for computational resource node and storage resources node for being physically separated setting.
2. SAS switch according to claim 1, is characterized in that, also comprise:
Network subcard, is connected with described switch subcard and described backboard, for when described SAS switch subcard and external switch have the network interface of different transmission rates, carries out transmission rate conversion.
3. SAS switch according to claim 2, is characterized in that, described SAS switch subcard is multiple, and described network subcard is one, and each SAS switch subcard is all connected with described network subcard.
4. SAS switch according to claim 3, it is characterized in that, when the network interface of described SAS switch subcard is 100,000,000 network interfaces, and the network interface of described external switch is when being 10,000,000,000 network interface, described network subcard is gigabit networking subcard, one end of described gigabit networking subcard connects 100,000,000 network interfaces of each SAS switch subcard, the other end connects one end that outside gigabit turns 10,000,000,000 modules, and the other end that described gigabit turns 10,000,000,000 modules connects described 10,000,000,000 network interfaces.
5. SAS switch according to claim 1, it is characterized in that, when the network interface of described SAS switch subcard is 100,000,000 network interfaces, and the network interface of described external switch is when being gigabit networking interface, 100,000,000 network interfaces of described SAS switch subcard connect described gigabit networking interface.
6. a server, is characterized in that, comprising:
SAS switch as described in any one of claim 1-5; And,
Computational resource node and storage resources node;
Wherein, described SAS switch connects computational resource node and storage resources node respectively, and described computational resource node is separated setting physically with described storage resources node.
7. server according to claim 6, is characterized in that, described SAS switch also for:
Set up computational resource node and with the mapping relations between the single disk storage resources node that is granularity.
8. server according to claim 6, it is characterized in that, when described computational resource node and described storage resources node are respectively multiple, the annexation of described computational resource node and described storage resources node and described SAS switch meets at least one item in following condition:
Each computational resource node is connected to described SAS switch by one or more port;
Each storage resources node is connected to described SAS switch by one or more port;
Different storage resources node cascades, and a storage resources node at least two storage resources nodes after cascade is connected to described SAS switch by one or more port.
9. server according to claim 6, is characterized in that, when the quantity of described SAS switch subcard is at least two,
The resource node that each SAS switch subcard connects forms independently resource pool; Or,
Each SAS switch subcard connects the resource node of self correspondence, and is connected to each other between two between different SAS switch subcards, and the resource node making different SAS switch subcards corresponding forms unified resource pond;
Wherein, described resource node comprises: computational resource node and storage resources node.
10. server according to claim 6, is characterized in that, also comprises:
With described SAS switch independently arrange as at least one item in lower module:
Supply module, radiating module, administration module.
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| WO2019100701A1 (en) * | 2017-11-23 | 2019-05-31 | 郑州云海信息技术有限公司 | Sas switch controller extension architecture and design method thereof |
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| CN111381766B (en) * | 2018-12-28 | 2022-08-02 | 杭州海康威视系统技术有限公司 | Method for dynamically loading disk and cloud storage system |
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